NUCLEAR REACTOR FUEL RODS AND FUEL ASSEMBLY IN WHICH SAME ARE BUNDLED
    6.
    发明公开
    NUCLEAR REACTOR FUEL RODS AND FUEL ASSEMBLY IN WHICH SAME ARE BUNDLED 审中-公开
    核反应堆燃料棒和燃料组件,在该组件中捆绑

    公开(公告)号:EP3226247A1

    公开(公告)日:2017-10-04

    申请号:EP14906870.2

    申请日:2014-11-26

    申请人: Hitachi, Ltd.

    IPC分类号: G21C3/06 G21C3/10

    摘要: An object of the invention is to provide a nuclear reactor fuel rod in which a SiC material is used as materials of a fuel cladding tube and an end plug, and air tightness, heat resistance, and corrosion resistance are provided at a bonding portion between the fuel cladding tube and the end plug, and to provide a fuel assembly in which nuclear reactor fuel rods are bundled. According to the invention, a nuclear reactor fuel rod is a fuel rod for a light-water reactor. The nuclear reactor fuel rod includes a fuel cladding tube and an end plug, both of which are formed of a silicon carbide material. A bonding portion between the fuel cladding tube and the end plug is formed by brazing with a predetermined metal bonding material interposed, and/or by diffusion bonding. The predetermined metal bonding material has a solidus temperature of 1200°C or higher. An outer surface of the bonding portion, and a portion of an outer surface of the fuel cladding tube and the end plug, which is adjacent to the outer surface of the bonding portion are covered by bonding-portion coating formed of a predetermined coating metal. The predetermined metal bonding material and the predetermined coating metal have an average linear expansion coefficient which is less than 10 ppm/K.

    摘要翻译: 本发明的目的是提供一种核反应堆燃料棒,其中使用SiC材料作为燃料包壳管和端塞的材料,并且气密性,耐热性和耐腐蚀性设置在 燃料包壳管和端塞,并提供一种燃料组件,其中核反应堆燃料棒被捆扎在一起。 根据本发明,核反应堆燃料棒是用于轻水反应堆的燃料棒。 核反应堆燃料棒包括燃料包壳管和端塞,二者均由碳化硅材料形成。 燃料包壳管和端塞之间的结合部分通过钎焊插入预定的金属结合材料和/或通过扩散结合形成。 规定的金属接合材料的固相线温度为1200℃以上。 接合部的外表面以及燃料包壳管和端塞的外表面的与接合部的外表面相邻的部分由预定的涂覆金属形成的接合部涂层覆盖。 规定的金属接合材料和规定的被覆金属的平均线膨胀系数小于10ppm / K。

    DRUCKSENSOR MIT EINEM KERAMISCHEN GRUNDKÖRPER
    7.
    发明公开
    DRUCKSENSOR MIT EINEM KERAMISCHEN GRUNDKÖRPER 审中-公开
    DRUCKSENSOR MIT EINEM KERAMISCHENGRUNDKÖRPER

    公开(公告)号:EP3134374A1

    公开(公告)日:2017-03-01

    申请号:EP14812774.9

    申请日:2014-12-18

    IPC分类号: C04B37/02 G01L9/00

    摘要: Disclosed is a pressure sensor, with a base body (1) of ceramic, a measuring membrane (3, 41) arranged on the base body (1), a pressure measurement chamber (5) enclosed in the base body (1) under the measuring membrane (3, 41), and at least one metal body connected to the base body (1) using a pressure-tight, preferably elastomer-free, mechanical connection (7, 37, 49), wherein thermomechanical stresses caused by the connection (7, 37, 49) are reduced by the fact that the pressure-tight mechanical connection (7, 37, 49) is achieved using an adjustment body (9, 19, 39, 51) arranged between the base body (1) and the metal body, wherein the adjustment body has a thermal expansion coefficient (a(z)) that increases, in a direction (z) from the base body (1) to the metal body, from an expansion coefficient corresponding to a thermal expansion coefficient (a

    k
    ) of the ceramic of the base body (1) to an expansion coefficient corresponding to the thermal expansion coefficient (a

    M
    ) of the metal body, and the adjustment body (9, 19, 39, 51) is connected to the base body (1) by a first join (11) and to the metal body by a second join (13).

    摘要翻译: 一种压力传感器,包括陶瓷平台,布置在平台上的测量膜,封闭在测量膜下方的平台中的压力测量室,以及至少一个金属体,其通过压力密封,优选无弹性的 ,机械连接。 通过连接件产生的热力学应力降低了特征,包括通过布置在平台和金属体之间的适配体来进行压力密封的机械连接。 适应体具有热膨胀系数,其从平台向金属体延伸的方向(z)从与平台的陶瓷的热膨胀系数相对应的膨胀系数对应于对应于该平台的膨胀系数 金属体的热膨胀系数和适配体通过与平台的第一接头和与金属体的第二接头连接。